Staff

Nathan Heimerl

Nathan Heimerl

Service Advisor

Certified
388 Reviews
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Cesar Nunez

Cesar Nunez

Sales and Leasing Consultant
206 Reviews
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Matthew Myszka

Matthew Myszka

Service Manager
194 Reviews
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Sherry Konek

Sherry Konek

Sales and Leasing Consultant

Certified
176 Reviews
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Rafael (Rafy) Rivera

Rafael (Rafy) Rivera

General Manager
96 Reviews
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Leigh Mattilla

Leigh Mattilla

Sales & Leasing Consultant
95 Reviews
View Bio
Tim Robinson

Tim Robinson

Sales Manager
53 Reviews
View Bio
William Harris

William Harris

Service Advisor

Certified
31 Reviews
View Bio
Maria Fuller

Maria Fuller

Inventory Manager
23 Reviews
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Ryan Granzow

Ryan Granzow

Finance Manager

Certified
19 Reviews
View Bio
William (Liam) Dooley

William (Liam) Dooley

Service Advisor
10 Reviews
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Brian Crandall

Brian Crandall

Sales Director
2 Reviews
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Michael Pocian

Michael Pocian

Sales Representative
1 Review
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Brad Rasmussen

Brad Rasmussen

Parts Rep
1 Review
View Bio
Jeremy Brown

Jeremy Brown

Parts Rep
View Bio
Jared Gengler

Jared Gengler

Parts Rep
View Bio
Jim Johnson

Jim Johnson

Parts Rep
View Bio
Steve Nowak

Steve Nowak

Parts Manager
View Bio
Sue Schneider

Sue Schneider

Office Manager
View Bio
Clarence Smith

Clarence Smith

Sales & Leasing Consultant
View Bio
Nathan Heimerl

Nathan Heimerl

Service Advisor

388 Reviews
Certified
Dealership Experience 11 years 6 months
Industry Experience 14 years 11 months
Recent Reviews

Jun 19, 2024

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Thank you for keeping Nate in service.

Thank you for keeping Nate in service. He was on vacation on my last visit, so my service less then normal.

Jun 13, 2024

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Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

Jun 08, 2024

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Service was easy to arrange and the work done fast and my

Service was easy to arrange and the work done fast and my truck seems to work like it is supposed to to

Jun 07, 2024

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I was greated and was served right away My car was

I was greated and was served right away My car was serviced very very fast

May 31, 2024

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I experienced professionalism and respect when I had my

I experienced professionalism and respect when I had my appt. The service professional asked me questions with concern.

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Cesar Nunez

Cesar Nunez

Sales and Leasing Consultant
Contact Me
Dealership Experience 11 years 11 months
Industry Experience 11 years 11 months
Hi everybody, thank you for reading my profile. Let me share a few things about myself. I was born in the Dominican Republic and moved to Wisconsin over 25 years ago. I really enjoy the 4 seasons that Wisconsin has to offer. I enjoy sports, especially football, and I'm a big fan of all the sports teams in Wisconsin.
Recent Reviews

Jun 23, 2024

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I have dealt with many of dealerships I would say Sherry

I have dealt with many of dealerships I would say Sherry and the staff were the best to deal with

May 29, 2024

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Service department makes you feel at home and are always

Service department makes you feel at home and are always verry pleasant and courtious towards the customer

Apr 30, 2024

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Every person was helpful regardless of whether they were

Every person was helpful regardless of whether they were directly involved or not. When I’ve stopped in for help, all were more than willing to help

Nov 05, 2023

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The process could be faster.

The process could be faster. Service and information great but we spent more time there than expected

Oct 19, 2023

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We felt we were given a fair deal on our trade in.

We felt we were given a fair deal on our trade in. Cesar is a really an excellant salesperson.. Came across as an honest sales person, we didn’t always find that in other places we checked out……

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Matthew Myszka

Matthew Myszka

Service Manager
Recent Reviews

Jun 13, 2024

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Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

Apr 21, 2024

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I've been a customer of this dealership for 8 year's now

I've been a customer of this dealership for 8 year's now committed service convenience and dedication . Swift process of buying or nauniting cars will recommend to friends and family .m

Dec 16, 2023

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Antennae went bad, they ordered the part and provided a

Antennae went bad, they ordered the part and provided a shuttle service which was nice.

Dec 07, 2023

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Heiser has always treated me well.

Heiser has always treated me well. They truly appreciate my business, Nathan was very knowledgeable and professional. Next time I need service work, I will definitely go to Heiser.

Nov 29, 2023

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Great service when I go in.

Great service when I go in. Very polite. Feel very comfortable when I am at dealership.

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Sherry Konek

Sherry Konek

Sales and Leasing Consultant

176 Reviews
Certified
Contact Me
Dealership Experience 8 years 11 months
Industry Experience 8 years 11 months
Prior to getting into the auto business, I was a stay at home mom and a substitute teacher for 12+ years in West Bend, WI. 3 years ago, I came to Heiser Chevrolet Cadillac to look for a car for my daughter. The car that I came for on Friday, was sold on Saturday... (I went home to think about it).... It prompted me to say, "if cars sell this fast I'm in the wrong business", (just kidding of course, I loved my teaching job)... After numerous calls from management and my sales reprehensive Samantha, I joined the Heiser team! I love it! I pride myself on integrity, not being high pressure, you tell me what you need and want and I will make sure you find what you are looking for... I know you will not only be completely satisfied with me, but my whole Heiser team. I'm looking forward to working with you and welcoming you to our Heiser family!
Recent Reviews

Jun 23, 2024

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I have dealt with many of dealerships I would say Sherry

I have dealt with many of dealerships I would say Sherry and the staff were the best to deal with

Jun 23, 2024

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Clean place great people buy parts from them all the time

Clean place great people buy parts from them all the time glad I could finally buy a truck in town

Jun 18, 2024

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This team is amazing to work with.

This team is amazing to work with. Great customer service, honest, and a great deal!

Jun 11, 2024

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Everything was great except for the upsells😉 Friendly,

Everything was great except for the upsells😉 Friendly, professional and adjusted toy schedule to get the deal completed.

May 22, 2024

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Both Sherry and Ryan made it so easy and fast to get our

Both Sherry and Ryan made it so easy and fast to get our new car. Been working with Sherry at Heiser since she started there.

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Rafael (Rafy) Rivera

Rafael (Rafy) Rivera

General Manager
Recent Reviews

Jun 18, 2024

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This team is amazing to work with.

This team is amazing to work with. Great customer service, honest, and a great deal!

Jun 13, 2024

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Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

May 05, 2024

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I had a very pleasant experience.

I had a very pleasant experience. PJ had helped get the sale going and he was very clear and easy to understand! He worked with me instead of just trying to “sell” me a car.

Apr 30, 2024

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Every person was helpful regardless of whether they were

Every person was helpful regardless of whether they were directly involved or not. When I’ve stopped in for help, all were more than willing to help

Apr 29, 2024

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Sherry was very helpful.

Sherry was very helpful. Made a stressful process easier. Everyone was very nice and helpful!

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Leigh Mattilla

Leigh Mattilla

Sales & Leasing Consultant
Contact Me
Dealership Experience 5 years 10 months
Industry Experience 5 years 10 months
Recent Reviews

May 05, 2024

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Employee Rating

I had a very pleasant experience.

I had a very pleasant experience. PJ had helped get the sale going and he was very clear and easy to understand! He worked with me instead of just trying to “sell” me a car.

Apr 30, 2024

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Every person was helpful regardless of whether they were

Every person was helpful regardless of whether they were directly involved or not. When I’ve stopped in for help, all were more than willing to help

Apr 24, 2024

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Sales and finance were awesome people to work with.

Sales and finance were awesome people to work with. Service and parts dept have a slight lack of communication but in the end everything got sorted out.

Apr 20, 2024

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We would recommend Heiser Chevrolet Cadillac in West

We would recommend Heiser Chevrolet Cadillac in West Bend. The staff was very friendly and got us in the vehicle we were looking for. Leigh Mattila was our sales person.

Apr 16, 2024

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All 3 people I bought my '21 Vette from told me I could

All 3 people I bought my '21 Vette from told me I could transfer my serving to Oconomowoc where I live which I did n they quoted me &180 so I said ok I'll get it free from my Heiser. I go and get my service done and get a bill for $293!!! Pissed. Not to mention my 4-5 hours at my billing rate of $1,000/hr!!!

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Tim Robinson

Tim Robinson

Sales Manager
Recent Reviews

Jun 07, 2023

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Would not let me pay for a car with cash and only allowed

Would not let me pay for a car with cash and only allowed me to use their lender (only gave me the one option to finance) only cares about their kick back and not getting you an affordable auto loan

Jun 07, 2023

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Went above and beyond Held the vehicle for me until it

Went above and beyond Held the vehicle for me until it showed up. Had paperwork ready when I got to dealership

May 15, 2023

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Friendly, cooperative,had product knowledge, met my needs

Friendly, cooperative,had product knowledge, met my needs and wants , good customer service skills. Would do busy again.

Mar 26, 2023

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Good experience friendly people happy with my purchase so

Good experience friendly people happy with my purchase so far. Would recommend heiser to anyone looking for a cadillac

Mar 23, 2023

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Sherry Konek was so wonderful and kind and very

Sherry Konek was so wonderful and kind and very knowledgeable to help me purchase my Equinox! Definitely recommend Sherry if you are looking!

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William Harris

William Harris

Service Advisor

31 Reviews
Certified
Recent Reviews

Jun 19, 2024

Dealership Rating
Employee Rating

Thank you for keeping Nate in service.

Thank you for keeping Nate in service. He was on vacation on my last visit, so my service less then normal.

Jun 13, 2024

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Employee Rating

Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

Jun 12, 2024

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William was friendly and greeted me right away.

William was friendly and greeted me right away. . I appreciated his communication with me and keeping me updated.

Jun 07, 2024

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I was greated and was served right away My car was

I was greated and was served right away My car was serviced very very fast

Jun 04, 2024

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Treated respectfully.

Treated respectfully. Brake job done on time. Grateful for the two-way shuttle. Very pleased with the results.

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Maria Fuller

Maria Fuller

Inventory Manager
Recent Reviews

Apr 30, 2024

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Employee Rating

Every person was helpful regardless of whether they were

Every person was helpful regardless of whether they were directly involved or not. When I’ve stopped in for help, all were more than willing to help

Apr 17, 2024

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I have been with them for many years.

I have been with them for many years. Have been happy with Heiser.ok in three years I will be back Thank You

Apr 16, 2024

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Employee Rating

All 3 people I bought my '21 Vette from told me I could

All 3 people I bought my '21 Vette from told me I could transfer my serving to Oconomowoc where I live which I did n they quoted me &180 so I said ok I'll get it free from my Heiser. I go and get my service done and get a bill for $293!!! Pissed. Not to mention my 4-5 hours at my billing rate of $1,000/hr!!!

Apr 12, 2024

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Heiser handled us very well.

Heiser handled us very well. We found a car we wanted and they made the process very easy! Quick and simple!!!!

Feb 13, 2024

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Amazing Maria fuller is amazing, best sales person ever!

Amazing Maria fuller is amazing, best sales person ever!!! BEST EVER!!! HIGHLY RECOMMEND, very helpful.

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Ryan Granzow

Ryan Granzow

Finance Manager

19 Reviews
Certified
Recent Reviews

Jun 23, 2024

Dealership Rating
Employee Rating

I have dealt with many of dealerships I would say Sherry

I have dealt with many of dealerships I would say Sherry and the staff were the best to deal with

Jun 18, 2024

Dealership Rating
Employee Rating

This team is amazing to work with.

This team is amazing to work with. Great customer service, honest, and a great deal!

Jun 11, 2024

Dealership Rating
Employee Rating

Everything was great except for the upsells😉 Friendly,

Everything was great except for the upsells😉 Friendly, professional and adjusted toy schedule to get the deal completed.

May 22, 2024

Dealership Rating
Employee Rating

Both Sherry and Ryan made it so easy and fast to get our

Both Sherry and Ryan made it so easy and fast to get our new car. Been working with Sherry at Heiser since she started there.

May 20, 2024

Dealership Rating
Employee Rating

It was the easiest car buying experience ever.

It was the easiest car buying experience ever. They really worked with me and got me the car I really wanted!

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William (Liam) Dooley

William (Liam) Dooley

Service Advisor
Recent Reviews

Jun 13, 2024

Dealership Rating
Employee Rating

Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

Jun 07, 2024

Dealership Rating
Employee Rating

I was greated and was served right away My car was

I was greated and was served right away My car was serviced very very fast

May 29, 2024

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Had to have my car in three times before it was actually

Had to have my car in three times before it was actually fixed. The first time I waited two weeks for a part and when I called to check in on it the advisor I spoke with said the part had been there for 8 days. Very disappointing level of service.

May 29, 2024

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Found problem and repaired the car in the time frame they

Found problem and repaired the car in the time frame they said and at the price quoted before work was started.

May 17, 2024

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I like taking my car there for oil changes cause they

I like taking my car there for oil changes cause they know my car any problem I have they help me there always helpful with what I need for my car

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Brian Crandall

Brian Crandall

Sales Director
Recent Reviews

Jun 13, 2024

Dealership Rating
Employee Rating

Will was super friendly.

Will was super friendly. The waiting area was clean, and they did a great job on my car.

Jan 07, 2024

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Employee Rating

This place it a good place to go if you want to buy a car

This place it a good place to go if you want to buy a car

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Michael Pocian

Michael Pocian

Sales Representative
Recent Reviews

Apr 16, 2024

Dealership Rating
Employee Rating

All 3 people I bought my '21 Vette from told me I could

All 3 people I bought my '21 Vette from told me I could transfer my serving to Oconomowoc where I live which I did n they quoted me &180 so I said ok I'll get it free from my Heiser. I go and get my service done and get a bill for $293!!! Pissed. Not to mention my 4-5 hours at my billing rate of $1,000/hr!!!

View More Reviews on DealerRater
Brad Rasmussen

Brad Rasmussen

Parts Rep
Recent Reviews

Jan 07, 2024

Dealership Rating
Employee Rating

This place it a good place to go if you want to buy a car

This place it a good place to go if you want to buy a car

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Jeremy Brown

Jeremy Brown

Parts Rep
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Jared Gengler

Jared Gengler

Parts Rep
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Jim Johnson

Jim Johnson

Parts Rep
View More Reviews on DealerRater
Steve Nowak

Steve Nowak

Parts Manager
View More Reviews on DealerRater
Sue Schneider

Sue Schneider

Office Manager
View More Reviews on DealerRater
Clarence Smith

Clarence Smith

Sales & Leasing Consultant
View More Reviews on DealerRater

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    Sherry Konek

    Sherry Konek

    Sales and Leasing Consultant

    176 Reviews
    Cesar Nunez

    Cesar Nunez

    Sales and Leasing Consultant

    206 Reviews
    Maria Fuller

    Maria Fuller

    Inventory Manager

    23 Reviews
    Leigh Mattilla

    Leigh Mattilla

    Sales & Leasing Consultant

    95 Reviews
    Tim Robinson

    Tim Robinson

    Sales Manager

    53 Reviews
    Michael Pocian

    Michael Pocian

    Sales Representative

    1 Review
    Clarence Smith

    Clarence Smith

    Sales & Leasing Consultant